Semi-closed low-noise condensing unit

Abstract

The utility model discloses a semi-closed low-noise condensing unit, which relates to the technical field of condensers and comprises a rack, a fixed frame is fixedly arranged at one end of the upper surface of the rack, and a fan is fixedly arranged in the middle of the outer side of the fixed frame. The fixing frame is arranged above the machine frame, the heat dissipation copper pipe is arranged in the fixing frame, the draught fan is arranged on the outer side of the fixing frame, the draught fan and the heat dissipation copper pipe form a condenser structure, the connecting pipe and the circulating pipe are arranged at the bottom end of the heat dissipation copper pipe, the fixing pipe is arranged in the middle of the circulating pipe, and the pressure detection pipe is arranged in the fixing pipe. A movable seat capable of sliding along with the pressure of the condenser is arranged in the pressure detection pipe, a current-conducting plate, a current-conducting sliding piece and a resistance plate are arranged on the outer side of the movable seat, and the current-conducting plate, the current-conducting sliding piece and the resistance plate form a variable resistance structure which can control a fan according to the pressure in a condenser pipeline. Therefore, the rotating speed of the fan can be reasonably controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of condensing machines, in particular to a semi-enclosed low-noise condensing unit. Background Art

[0002] Refrigeration equipment refers to equipment mainly used for refrigerating crew food, refrigerating various types of cargo, and air conditioning in cabins in summer. It is mainly composed of compressors, expansion valves, evaporators, condensers, accessories, and pipelines. At present, the most commonly used refrigeration equipment on ships is compression refrigeration equipment, which removes heat from objects and their surroundings through the working cycle of the equipment, creating and maintaining a certain low temperature state.

[0003] For example, a semi-enclosed butterfly valve condensing unit with publication number CN210822715U relates to the technical field of refrigeration equipment, including a shell and tube heat exchanger, a semi-enclosed Copeland compressor, a pressure controller, an oil separator, a first connecting pipe, a second connecting pipe, a drying filter and a first connecting frame. A second connecting frame matching the first connecting frame is provided at the bottom of the semi-enclosed Copeland compressor, and a connecting bolt is provided at the bottom of the first connecting frame. An isolator is sleeved on the connecting bolt, and a nut is sleeved on the outer wall of the connecting bolt above the second connecting frame. Rubber rings are provided on the top and bottom of the isolator. The utility model uses a semi-enclosed Copeland compressor, which can effectively reduce energy consumption while ensuring ultra-low temperature requirements, has low cost, and significantly reduces the size and weight of the unit. It can realize the connection and fixation of the shell and tube heat exchanger and the semi-enclosed Copeland compressor, and can avoid direct contact and wear between the first connecting frame and the second connecting frame. It can reduce shock and extend the service life of the unit.

[0004] In practical applications, the above technical solution is difficult to flexibly control the speed of the condenser fan, thereby making it difficult to reasonably control the operating power of the equipment.

[0005] Therefore, it is necessary to invent a semi-enclosed low-noise condensing unit to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a semi-enclosed low-noise condensing unit to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a semi-enclosed low-noise condensing unit, comprising a frame, a fixing frame is fixedly arranged at one end of the upper surface of the frame, a fan is fixedly arranged in the middle of the outer side of the fixing frame, a plurality of groups of heat dissipation copper tubes are fixedly arranged inside the fixing frame, and the plurality of groups of heat dissipation copper tubes are all arranged in a serpentine structure, connecting tubes are fixedly arranged at both ends of the heat dissipation copper tubes, a circulation tube is fixedly arranged at the bottom end of the connecting tube, a fixing tube is fixedly arranged in the middle of one of the circulation tubes, and a pressure detection tube is fixedly arranged inside the fixing tube, The outer wall of the pressure detecting tube is surrounded by a plurality of connecting grooves, a movable seat is arranged inside the pressure detecting tube, and a spring is arranged between the movable seat and one end of the inner wall of the pressure detecting tube, a plurality of connecting blocks are arranged around the outer wall of the movable seat, and a sealing sleeve is fixedly arranged on the outer side of the connecting block, and the sealing sleeve is sleeved on the outer side of the pressure detecting tube, a conductive plate is fixedly arranged on the outer wall of the sealing sleeve, a conductive sliding piece is fixedly arranged on one end of the conductive plate, a resistor plate is fixedly arranged on the inner wall of the fixed tube, and the resistor plate corresponds to the conductive sliding piece.

[0008] Preferably, a first wiring seat and a second wiring seat are fixedly provided at both ends of the outer side wall of the fixed tube, respectively, and the bottom end of the first wiring seat is connected to the resistor plate.

[0009] Preferably, a conductive contact is fixedly provided at the bottom end of the second wiring seat, and the bottom end of the conductive contact is in contact with the outer side wall of the conductive plate.

[0010] Preferably, the first wiring socket is electrically connected to the fan via a wire, and the second wiring socket is connected to a power source via a wire.

[0011] Preferably, an expansion valve is fixedly arranged in the middle of the other circulation pipe, a compressor is fixedly arranged at one end of the upper surface of the frame, and the input end and the output end of the compressor are fixedly connected to the two circulation pipes respectively.

[0012] Preferably, the heat dissipation copper tube is configured as an internally threaded copper tube, and a plurality of heat dissipation fins are fixedly disposed on the outer side of the heat dissipation copper tube.

[0013] Technical effects and advantages of the utility model:

[0014] 1. The utility model sets a fixed frame above the frame, a heat dissipation copper tube is arranged inside the fixed frame, a fan is arranged outside the fixed frame, the fan and the heat dissipation copper tube form a condenser structure, a connecting tube and a circulation tube are arranged at the bottom end of the heat dissipation copper tube, a fixed tube is arranged in the middle of the circulation tube, a pressure detection tube is arranged inside the fixed tube, a movable seat that can slide following the condenser pressure is arranged inside the pressure detection tube, a conductive plate, a conductive slide and a resistor plate are arranged outside the movable seat, and the conductive plate, the conductive slide and the resistor plate form a variable resistance structure, which can control the fan according to the pressure in the condenser pipeline, so as to realize reasonable control of the fan speed;

[0015] 2. The utility model arranges a heat dissipation copper tube, and the heat dissipation copper tube is arranged as an internally threaded copper tube. The internally threaded copper tube can ensure the heat transfer effect between the refrigerant and the heat dissipation copper tube, thereby improving the heat dissipation efficiency of the device, and further improving the refrigeration efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the fixed frame structure of the utility model.

[0018] Figure 3 This is a schematic diagram of the heat dissipation copper tube structure of the utility model.

[0019] Figure 4 It is a cross-sectional schematic diagram of the fixed pipe structure of the utility model.

[0020] In the figure: 1. frame; 2. fixed frame; 3. fan; 4. heat dissipation copper tube; 5. connecting tube; 6. circulation tube; 7. fixed tube; 8. pressure detection tube; 9. connecting groove; 10. movable seat; 11. connecting block; 12. sealing sleeve; 13. conductive plate; 14. conductive sliding piece; 15. resistor plate; 16. first terminal block; 17. second terminal block; 18. conductive contact; 19. expansion valve; 20. compressor. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides Figure 1-4The semi-enclosed low-noise condensing unit shown comprises a frame 1, a fixing frame 2 is fixedly arranged at one end of the upper surface of the frame 1, a fan 3 is fixedly arranged at the middle part of the outer side of the fixing frame 2, a plurality of heat dissipation copper tubes 4 are fixedly arranged inside the fixing frame 2, and the plurality of heat dissipation copper tubes 4 are all arranged in a serpentine structure, connecting tubes 5 are fixedly arranged at both ends of the heat dissipation copper tubes 4, and a circulation tube 6 is fixedly arranged at the bottom end of the connecting tube 5;

[0023] Specifically, a fixed tube 7 is fixedly arranged in the middle of a circulation tube 6, a pressure detection tube 8 is fixedly arranged inside the fixed tube 7, a plurality of connecting grooves 9 are arranged around the outer wall of the pressure detection tube 8, a movable seat 10 is arranged inside the pressure detection tube 8, and a spring is arranged between the movable seat 10 and one end of the inner wall of the pressure detection tube 8, a plurality of connecting blocks 11 are arranged around the outer wall of the movable seat 10, and a sealing sleeve 12 is fixedly arranged on the outer side of the connecting block 11, and the sealing sleeve 12 is sleeved on the outer side of the pressure detection tube 8, the movable seat 10 cooperates with the sealing sleeve 12 to control the refrigerant flow rate from the pressure detection tube 8 into the fixed tube 7, so as to achieve the effect of detecting the refrigerant pressure, so that a conductive plate 13 is fixedly arranged on the outer wall of the sealing sleeve 12, a conductive slide 14 is fixedly arranged on one end of the conductive plate 13, a resistor plate 15 is fixedly arranged on the inner wall of the fixed tube 7, and the resistor plate 15 corresponds to the conductive slide 14;

[0024] More specifically, the two ends of the outer wall of the fixed tube 7 are respectively fixedly provided with a first terminal block 16 and a second terminal block 17, the bottom end of the first terminal block 16 is connected to the resistor plate 15, the bottom end of the second terminal block 17 is fixedly provided with a conductive contact 18, and the bottom end of the conductive contact 18 is in contact with the outer wall of the conductive plate 13, the first terminal block 16 is electrically connected to the fan 3 through a wire, and the second terminal block 17 is connected to the power supply through a wire, and the first terminal block 16, the resistor plate 15, the conductive slider 14, the conductive plate 13, the conductive contact 18 and the second terminal block 17 form a sliding rheostat structure, which can realize the adjustment of the rotation speed of the fan 3;

[0025] In addition, an expansion valve 19 is fixedly arranged in the middle of another circulation pipe 6, and a compressor 20 is fixedly arranged at one end of the upper surface of the frame 1. The input end and the output end of the compressor 20 are respectively fixedly connected to the two circulation pipes 6, and the compressor 20 can realize the circulation drive of the refrigerant in the pipeline;

[0026] Moreover, the heat dissipation copper tube 4 is configured as an internally threaded copper tube, and a plurality of heat dissipation fins are fixedly arranged on the outside of the heat dissipation copper tube 4. The internally threaded copper tube can ensure the heat transfer effect between the refrigerant and the heat dissipation copper tube 4, thereby improving the heat dissipation efficiency of the device, and further improving the refrigeration efficiency of the device.

[0027] Working principle of this utility model:

[0028] When the device is in use, the heat dissipation copper tube 4 and the fan 3 form a condenser structure. The refrigerant in the heat dissipation copper tube 4 can circulate under the action of the connecting tube 5, the circulation tube 6 and the compressor 20. In this process, the refrigerant passes through the fixed tube 7 and the expansion valve 19. The expansion valve 19 can realize the transformation of the refrigerant state, and the fixed tube 7 can detect the pressure of the refrigerant through the pressure detection tube 8 and the movable seat 10 inside it, and adjust the current input of the fan 3 according to the refrigerant pressure to realize the control of the fan speed;

[0029] After entering the fixed tube 7, the refrigerant directly enters the pressure detection tube 8, and enters the fixed tube 7 through the connecting groove 9 on the outside of the pressure detection tube 8, and then enters the circulation tube 6. During this process, the movable seat 10 slides in the pressure detection tube 8 under the action of the refrigerant pressure. The movable seat 10 can drive the sealing sleeve 12 to slide through the connecting block 11, and the sealing sleeve 12 can drive the conductive plate 13 and the conductive slide 14 to slide, so that the position between the conductive slide 14 and the resistor plate 15 is adjusted, so that the range of the resistor plate 15 connected to the circuit is adjusted, and then the resistance of the circuit can be adjusted to achieve the effect of adjusting the speed of the fan 3.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A semi-enclosed low-noise condensing unit, comprising a frame (1), characterized in that: A fixing frame (2) is fixedly arranged at one end of the upper surface of the frame (1), a fan (3) is fixedly arranged in the middle of the outer side of the fixing frame (2), a plurality of groups of heat dissipation copper tubes (4) are fixedly arranged inside the fixing frame (2), and the plurality of groups of heat dissipation copper tubes (4) are all arranged in a serpentine structure, connecting tubes (5) are fixedly arranged at both ends of the heat dissipation copper tubes (4), a circulation tube (6) is fixedly arranged at the bottom end of the connecting tube (5), a fixing tube (7) is fixedly arranged in the middle of one of the circulation tubes (6), a pressure detection tube (8) is fixedly arranged inside the fixing tube (7), a plurality of connecting grooves (9) are arranged around the outer side wall of the pressure detection tube (8), and the pressure detection tube (8) is fixedly arranged in the fixing tube (7 ... A movable seat (10) is arranged inside the measuring tube (8), and a spring is arranged between the movable seat (10) and one end of the inner wall of the pressure detecting tube (8). A plurality of connecting blocks (11) are arranged around the outer wall of the movable seat (10), and a sealing sleeve (12) is fixedly arranged on the outer side of the connecting block (11), and the sealing sleeve (12) is sleeved and arranged on the outer side of the pressure detecting tube (8). A conductive plate (13) is fixedly arranged on the outer wall of the sealing sleeve (12), and a conductive sliding piece (14) is fixedly arranged at one end of the conductive plate (13). A resistor plate (15) is fixedly arranged on the inner wall of the fixed tube (7), and the resistor plate (15) corresponds to the conductive sliding piece (14).

2. The semi-enclosed low-noise condensing unit according to claim 1, characterized in that: A first wiring seat (16) and a second wiring seat (17) are respectively fixedly provided at both ends of the outer side wall of the fixed tube (7), and the bottom end of the first wiring seat (16) is connected to the resistor plate (15).

3. The semi-enclosed low-noise condensing unit according to claim 2 is characterized in that: A conductive contact (18) is fixedly arranged at the bottom end of the second wiring seat (17), and the bottom end of the conductive contact (18) is in contact with the outer side wall of the conductive plate (13).

4. The semi-enclosed low-noise condensing unit according to claim 3 is characterized in that: The first wiring socket (16) is electrically connected to the fan (3) via a wire, and the second wiring socket (17) is connected to a power source via a wire.

5. The semi-enclosed low-noise condensing unit according to claim 4 is characterized in that: An expansion valve (19) is fixedly arranged in the middle of the other circulation pipe (6), and a compressor (20) is fixedly arranged at one end of the upper surface of the frame (1), and the input end and the output end of the compressor (20) are fixedly connected to the two circulation pipes (6) respectively.

6. The semi-enclosed low-noise condensing unit according to claim 5, characterized in that: The heat dissipation copper tube (4) is provided as an internally threaded copper tube, and a plurality of heat dissipation fins are fixedly provided on the outer side of the heat dissipation copper tube (4).

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